tests/metrics: Combine network server/client test into one
tests/metrics: Combine network server/client test into one

The client and server bandwidth tests actually run the same test
and just extract different output lines for their results, so:
 - combine the tests for efficiencies sake
 - rename it to 'client server', as it is more accurate than
   local/remote

Signed-off-by: Graham Whaley <95f36e5ac6982f4574a5c449c37cf652e934d2b9@intel.com>

sboeuf/tests,chavafg/tests,bwarden/tests,sboeuf/tests,clearcontainers/tests,devimc/tests,bwarden/tests,devimc/tests,MarioCarrilloA/tests,chavafg/tests,MarioCarrilloA/tests,clearcontainers/tests